package demo.log;

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson.JSON;
import com.richstonedt.garnet.model.bo.UserAuthenticationBO;
import com.richstonedt.rziomp.common.enums.BusinessStatus;
import com.richstonedt.rziomp.common.utils.AddressUtils;
import com.richstonedt.rziomp.common.utils.IpUtils;
import com.richstonedt.rziomp.common.utils.ServletUtils;
import com.richstonedt.rziomp.common.utils.SpringUtils;
import demo.entity.SystemLog;
import demo.entity.SystemNormalUser;
import demo.entity.SystemUser;
import demo.service.GarnetUserService;
import demo.service.LogService;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.HandlerMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Date;
import java.util.Map;

/**
 * 操作日志记录处理
 *
 * @author ruoyi
 */
//TODO:step x 日志过滤
@Aspect
@Component
@Slf4j
public class LogAspect {
    @Autowired
    private GarnetUserService garnetUserService;

    // 配置织入点
    @Pointcut("@annotation(demo.log.Log)")
    public void logPointCut() {
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Object jsonResult) {
        handleLog(joinPoint, null, jsonResult);
    }

    /**
     * 拦截异常操作,接口抛出异常
     *
     * @param joinPoint 切点
     * @param e         异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e) {
        handleLog(joinPoint, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, final Exception e, Object jsonResult) {
        try {
            Log controllerLog = getAnnotationLog(joinPoint);
            if (ObjectUtil.isNull(controllerLog)) {
                return;
            }
            //数据库日志对象
            SystemLog systemLog = new SystemLog();
            Date now = new Date();
            HttpServletRequest request = ServletUtils.getRequest();
            UserAuthenticationBO userBO = garnetUserService.getCurrentUser(request);
            systemLog.setOperationStatus(BusinessStatus.SUCCESS.ordinal());
            // 请求的地址
            String ip = IpUtils.getIpAddr(ServletUtils.getRequest());
            systemLog.setOperationIp(ip);
            // 返回参数
            systemLog.setResultParameter(JSON.toJSONString(jsonResult));
            systemLog.setRequestUrl(ServletUtils.getRequest().getRequestURI());
            SystemUser systemUser = SpringUtils.getBean(GarnetUserService.class).getLoginUser(ServletUtils.getRequest());
            if (systemUser instanceof SystemNormalUser) {
                systemLog.setOperatorName(((SystemNormalUser) systemUser).getNickname());
            } else {
                systemLog.setOperatorName("未知");
            }
            if (e != null) {
                systemLog.setOperationStatus(BusinessStatus.FAIL.ordinal());
                systemLog.setErrorMessage(StrUtil.sub(e.getMessage(), 0, 2000));
            }
            //设置类名
            String className = joinPoint.getTarget().getClass().getName();
            // 设置方法名称
            String methodName = joinPoint.getSignature().getName();
            systemLog.setBusinessMethod(className + "." + methodName + "()");
            // 设置请求方式
            systemLog.setRequestMethod(ServletUtils.getRequest().getMethod());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, systemLog);
            systemLog.setOperationLocation(AddressUtils.getRealAddressByIP(systemLog.getOperationIp()));
            systemLog.setCreatedTime(now);
            systemLog.setUpdatedTime(now);
            systemLog.setUpdatedUserId(userBO.getId());
            systemLog.setCreatedUserId(userBO.getId());
            systemLog.setStatus("0");
            //设置
            LogService logService = SpringUtils.getBean(LogService.class);
            //保存日志
            log.info(systemLog.toString());
            logService.saveLog(systemLog);
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log     日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, Log log, SystemLog operLog) throws Exception {
        // 设置action动作
        operLog.setBusinessType(log.businessType().ordinal());
        // 设置标题
        operLog.setTitle(log.title());
        // 设置操作人类别
        operLog.setOperationType(log.operatorType().ordinal());
        // 是否需要保存request，参数和值
        if (log.isSaveRequestData()) {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, operLog);
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param systemLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, SystemLog systemLog) throws Exception {
        String requestMethod = systemLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
            String params = argsArrayToString(joinPoint.getArgs());
            systemLog.setRequestParameters(StrUtil.sub(params, 0, 2000));
        } else {
            Map<?, ?> paramsMap = (Map<?, ?>) ServletUtils.getRequest().getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            systemLog.setRequestParameters(StrUtil.sub(paramsMap.toString(), 0, 2000));
        }
    }

    /**
     * 是否存在注解，如果存在就获取
     */
    private Log getAnnotationLog(JoinPoint joinPoint) throws Exception {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null) {
            return method.getAnnotation(Log.class);
        }
        return null;
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (int i = 0; i < paramsArray.length; i++) {
                if (!isFilterObject(paramsArray[i])) {
                    Object jsonObj = JSON.toJSON(paramsArray[i]);
                    params += jsonObj.toString() + " ";
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                if (value instanceof MultipartFile) {
                    return true;
                }
            }
            return false;
            //是否为Map类的子类
        } else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                if (value instanceof MultipartFile) {
                    return true;
                }
            }
            return false;
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse;
    }
}
